A look at the storylines that will dominate the upcoming TV season

Clear out your DVRs, everyone: The fall TV season is coming. Over the next few weeks, networks will begin rolling out the splashy premiere episodes of their biggest hits, and hoping that the incessant promotion over the summer for their new series will pay off. Some series will be returning with an uncertain future, like Glee, which will face the classic graduation conundrum that haunts shows set in high school. Others, like The Office, Two and a Half Men, and CSI, are returning with new stars in the leading roles, hoping that their fanbases respond to the new dynamic offered by James Spader, Ashton Kutcher, and Ted Danson, respectively. On top of that, a slew of new series—from a sci-fi jaunt with dinosaurs to a Charlie's Angels reboot—will be vying for viewers' attentions. With all of this programming to sift through, here are the 10 biggest questions about this fall's TV line-up: